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Experimental Investigation on Parameters for the Control of Droplets Dynamics

Maide Bucolo, Francesca Sapuppo, Florinda Schembri
In this work temporal nonlinear dynamics in two-phase microfluidic phenomena are investigated. Time series representing the dynamics of two phase flow in an in vitro microfluidic serpentine mixer were captured using an optical magnification system and sensitive photodiodes in order to access to fast bubbles flow patterns in the time domain. Nonlinear analysis were performed: embedding space reconstruction, trajectories divergence curve, evaluation of the maximum Lyapunov exponent (λmax) and d-infinite (d∞). This work represents thus a first insight on temporal patterns related to two phase flow in microfluidics and it presents significant relationships between the control parameters under investigation and nonlinear indicators extracted from experimental time series.
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